Add allowAnonymousSubmissions(). objectManager checks the return value of this new function and

exists with an error during certain actions if the user is not logged in and the function returns
false

include/screenshot.php

@@ -639,6 +639,11 @@ class Screenshot {
         /* STUB */
         return TRUE;
     }
+
+    function allowAnonymousSubmissions()
+    {
+        return FALSE;
+    }
 }
 
 ?>